All India educational survey (6th)   National table    

 - New Delhi   NCERT           1997 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education
<br/><br/><label>Dewey Class. No.: </label>T.2s.N7, N7.5